Type-writer attachment.



PATENTED MAY 12, 1908.

J. O. STEVENSON.

TYPE WRITER ATTACHMENT.

APPLICATION FILED JULY 9. 1907.

2 SHEETS-SHEET 1.

W1 rlwas's s m5 QS ZQVQZSOIZ j/Vi ENTOR 14 TTOR/VE Y5 i No, 887,143.PATENTED MAY 12, 1908.

L0. STEVENSON.

TYPE WRITER ATTACHMENT.

APPLICATION FILED JULYB, 1907.

% && F By ///I/ r/ A TTORNE VS 2 SHEETS-SHEET 2. Q

' Oklahoma, in the county of Oklahoma, Oklafor a paper web which will bearranged exterior to the carbon band.

cause of a multiplicity of papers, since with is made to travel with theplaten about the latter and over said spool.

also carry at each end extensible supports initial carrying reel for along web of paper JAMES O. STEVENSON, OF

' STATES OKLAHOMA, OKLAHOMA.

TYPE-WRITER ATTACBZMENT.

Specification of Letters Patent.

Patented. May 12, 1908.

Application filed July 9, 1907. Serial No. 582,840.

To all whom it may concern:

Be it known that I, JAMES O. STEVENSON, a citizen of the United States,residing at homa, have invented a new and useful Type- VVriterAttachment, of which the following is a specification.

This invention has reference to improvements in typewriter attachments,and its object is to provide means whereby multiple copies oftypewritten matter may be produced upon along web of paper through theintermediary of an endless carbon band or ribbon, so that copies of manypapers may be made without danger of losing the same bethe presentinvention copies of a great many papers may be made seriatim upon 'asingle web whiclrmay be preserved for future reference. V

The present invention is for an attachment to take the place of separatecarbon sheets and separate second sheets, thus economizing in the timeusually taken to arrange sheets for each page written. The attachmentalso assures a copy of all matter passing through the machine, since thecopies are made upon a continuous roll of paper so that there is nopossibility of losing any part of the copy ofthe original matter.

The present invention is applicable to various types of machines andcomprises essentially two standards, one at each end of theplaten-carrying frame or carriage, together with a spool for the supportof'one end of an endless band of carbon paper or ribbon which Thestandards for two. reels, one of'which constitutes the and the other ofwhich constitutes. the replaten and the 'carbon web. When desired,.

the standards may carry another pair of reels The attachment is soarranged that it will not interfere in any way with the ordinary use ofthe typewriter for making original copies, and when one carbon copy isdesired the carbon paper or band will be coated on but one side and theinner band of p'aperwill be employed, thus giving one straight carboncopy upon the paper Web. When, however,

two copies are desired, the outer web of paper fromthe followingdetailed description, taken,

in connection with the accompanying draw-. ings forming part of thisspecification, in which*,

' Figure 1 is a vertical section, through the typewriter platen,showing. the attachment 1n operative relation thereto; Fig. 2 is a frontelevation; Figs. 3, 4 and 5 are detail views; and Fig. 6 is a crosssection on the line 66 of Fig. 4.

Referring to the drawings, there is shown a platen 1 mounted in theusual manner upon a carriage 2, of which only the side-bars are shownbut which may be taken as indicative of any style of typewritercarriage.

Fast upon the side bars 2 are brackets 3 which may, if desired, remainupon the car.- riage when the other portions of the structure areremoved. 'Each bracket 3 terminates in a central, radially-upwardprojecting car 4, to which is fixed astandard or post'5 by means of apivot pin 6 proj ecting, from the lower end of the standard 5 throughthe ear l and receiving a wing nut 7 or any other type of thumb-nut,

. The upper ends ofthe standards 5 receive pintles 8 formed on the endsof a rod 9, which rod carri s flange collars-10. The pintles 8 may beeach provided with a circumferential groove 11 within its bearing in thestandard 5, and a set-screw 12-extending through the upper end of thebearing and engaging in said groove willserve to hold the standards 5from ture does not interfere in any manner with the rotation of the rod9.

spreading, and at the same time this 'struc- Passing over the rod 9between the flange.

collars 10 .is a web 13, which Webalso eX- tends around the platen 1.'This'web may be made of any suitable material capable of carrying thesubstances used for producing the so-called carbon copies upon pa er,and,

if desired, this web may be made 0 the carbon paper of the market andmaybe applied by being assed around the laten and rod 9 between t ecollars 10, and t e two ends may be united in any suitable manner, as,for instance, by pasting, so as'to form a continuone web. y

Upon the inner face of each standard 5 are two dovetail cross slots1'415, one quite close tothe lower end of thestandard and the other nearthe upper end thereof. The' dovetail slot 14 receives thedovetailsection 16 of a bar composed of two members 1718. The member 17is provided with a longitudinal slot' 19 receiving a tongue 20 on theother member. onal or other suitable shape, sov that one member can notturn with relation to the other, butis still free to telescope therein.Between the end of the tongue 20 and the base of the recess or slot 19there is housed a spring 21 the tendency of which is to force t e member18 away from the member; 17,-

but in order that this movement may be so limited as to not entirelyseparate the two 4 members of the bar the member 17 may be ical studs 24at the corresponding ends of the bars will constitute journal bearingsfor the spindle 25 and those at the other ends of the bars'willconstitute journal bearin s forthe spindle 26, thebearings being of tieneedle or point type,- oifering but slight friction to the rotativemovement of the spindle.

The reel spindle 25 will constitute the carrier for the unused web 27 ofpaper, which web is carried down alongside. the carbon paper betweenthelatter and the platen and thence upward until its end is secured to thereel spindle 26. N ow,'when the carbon web is in place it does not fittightly upon the platen 1 before the paper roll has been attached, butas soon as the paper rollwith its supportin bars 1718 is in place, thetendency of t e springs 21 being to force-the spindles 25 and 26 awayfrom each other, t e carbon paper will be put under sufficient tensionto bring the paper web 27 into good frictional contact with the carbonpaper and with the platen 1.

When a sheet of paper is placed in the typewriting machine in positionto be acted 'upon by thetfipe in the usual manner the paper feed Wicause the rotation of the platen and at the same time the paper' web 27and the carbon paper 13 will be caused to a travel with said p aten. Thefrictional en-.

, ga ement of the platen with the paper web Wil cause the unwinding ofthe latter from the roll carried by the reel spindle 25 and coincidentlythe frictional contact of the traveling band 13 of carbon paper will actupon I The tongue maybe of heXagthen the reels Web 27 of the originalimprints made by the of copiesupon the typewriting machine; that is, foreach sue- I cess'lve page of original typewritten matter there W1 1 beacorresponding copy upon the web, and these copies will follow oneanother 1n regular order.

When the pa er web upon the reel, 25 is exhausted and al wound up uponthe reel 26, 25 and 26 may be removed from the typewriter and a chargedreel put in the place of the reel 25, which latter, being empty, mayreplace theremoved reel 26.

Now, in order to facilitate the removal of the reels and the placingofother reels in posi tion, theends of the two members 1 718 :carrymg thestuds 24 are made separate fromthe main portion of said members and areunited thereto by hinges 28, while a sliding plate 29 carried by thehinged portion of each member and capable of being moved into and out ofoperative relation to the body portions of the members 1718 is providedfor locking these hinged portions in place or for so unlocking them thatthey'may be turned on their hinges. For this purpose there is provided athreaded pin 30 extending through the'hinged portion and through thesliding plate 29, and a thumb-nut 31 serves to clamp or loosen thesliding plate 29 in its operative or inoperative position. It is onlynecessary that one of the bars 17-18 be hinged and the other one may besolid or unbroken except thatit should be telescoping.

As the paper is unrolled from the reel @25 the paper'web thereonbecomes, of course, of

constantly decreasing diameter, while the paperweb on the reel 26 isconstantly increasing in diameter. This would cause a shifting of thecarbon web laterally were it not for the fact that each bar 1718 iscapable of inov-.

ing longitudinally in the dovetail slot 14, and, therefore, this portionof the device is self-adjusting to the varyin diameters of the paper webroll upon the ree s 25 and 26.

Fitted to the slots 15 are other bars 32, one

-of which may have hinged sections like the bars 1718 alreadydescribed,-and-both of the bars 32 may be telescoping. The bars 32 carryreels 33 and 34 similar to the'reels 25 and 26 and when in place thepaper web 37 carried upon the reel 33 is passed around the platenoutside of'the carbon web13 until it is wound upon the reel 34. carbonweb should be coated on both sides, while the paper web 37 is made of aspecially In this case the.

.mitted light.

thin paper, since the impressions received from-the carbon web 13 are inreverse, and, consequently, can be best read by trans- The feeding ofthe paper web 37 is accomplished by its frictional contact with thecarbon web 1-3. The bars 3'2 may be made quite similar to the bars 17 18but.

they have interposed between them a spring 38'which is put under stressby beingeX- tended so as to tend to draw the reels 33+34 toward eachother.

Since it issometimes desirable to tear off from the web 37 the secondcarbon copy in order that it may accompany the original,

there is provided a bar 39 extending across the front of the platen ashort distance above the same, and this bar may he supported by sidearms-40 fast to the standards by the same bolts 6 which secure saidstandards to" the brackets 3, or-other means maybe provided for thispurpose. The-bar 39 may lave its upper edge 41 properly shaped to' (forma tearing edge: The original copy and.

the web 37 are'carried up between the bar 39 and the carbon copy, andwhen tlie'original letter is finished they. may be drawn together untilthe original letter has passed the edge 41, when the portion of the web37 containing the carbon copy may be easily torn from the main body ofthe web instead of passing to the reel 34. This will mean that the rollof paper upon the reel 33 decreases in diameter without a correspondingincrease in di ameter of the-roll o'fpaper upon the reel 34 Now, inorder that the carbon web 13 may not become loose because of the factthat the reel 34 carries no paper, the spring 38 comes into action andwill draw tlie'two'reels to-' gather, thus taking up any slack thatinightj otherwise occur in the carbon web 13. When the paper web 37 isallowed to wind uponthe reel 34 the/two parts of the bars 32inay besecured together to operat'e as thoughthe bar' were solid by means of aclamp '"screw 42 which may be so arranged as .to bind the, two

members of the bar-32' in fixed relation one to the other, therebyputting-the spring 38 out of action. When the carbon 'copies'formed onthe web 37 are not to be torn off the bars 32 may be made solid, inwhich case the telescoping action of the bars'-17-'18' will besufficient to maintain the carbon web 13 in a taut condition. The web 37is only used when it is desired to make more than one carhon copy ofthe'original writing, and where only one carbon copy is desired a carbonweb coated on one-side only is all that is necessary. v

p ()n typewriting machines where the vpaper is easily detached .thecarbon web may be made endless, but on other machines 'it is necessaryto join the ends after having been placed in position, and this may bedone by a narrow layer of a suitable mucilaginons sub.-

stance.

It will'be-observed that the standards 5,are supported at theirulowerends upon the pins or studs 6 and are held iii place-by the clamp nuts7. It is therefore possible to swing the standards 5 about'the studs 6as an axis,

removed from the typewriter carriage.

endless transferv band also embracingsaid platen, and telescoingspringeactuated supports mounted in the standards and adaptedtoreceive paper web supporting and-winding reels on the two ends of thesupports.

l 2. A typewriter attachment comprising end standards adapted to' besecured to a typewriter carriage at' the two ends of the platen, arotatable bar joining the upperends of, the standards, and a pair of.telescoping springsactuated longitudirially-slidable bars iorsu'pport'smounted one in eachstandard and. each having journal bearings forpaperweb reels. a

l 3.- A typewriter attachment comprising end standards adapted to besecured 'to a "typewriter carriageat the two ends of the platen,.a-'rotatable barjoining the upper ends of the standards, and a pairof-telescoping spring-actuated longitudinally-slida'ble bars or supportsmounted one in each standard and each having journal hearings for paperwebreelajone-of said bars or supports having its ends hinged to the mainbody thereof'a-nd provided with lugsfor holding said ends'rigidwith-thebars.

,4. A typewriter. attachment comprising end standards adapted to beattached to a typewriter carriage at the ends of-the platen, arotatablerod connectingv the free ends of said-standards and adapted to supportan endless web of impression material also passing around the platen,telescoping springactuated laterally-movable bars carried, by saidstandards and adapted to receive the supporting reelsi of a paper webinterior to the web. of impression material, and other bars carriedibythe standards and adapted to receive and support the reels of a paperweb exterior to the web of impression material.

5 A typewriter attachment comprising.

end standards arranged to be secured to a typewriter carriage at theends of the platen,

- a rotatable b'ar connecting the free ends of the standards andcarrying flange collars, said bar and platen being adaptedto receiveanendless web of impression transfer material, telescopingfspring-actuated 10n, ;itudinallypression web,and otherlongitudinally-slid slidable bars mnimted in ach standard, one In testimony thaf'Iclaini the foregoing as of said bars having hinged --endsand lockmy own, I have heretoza ffixed my signature 10-.

members therefor, the send bars. cofip'erating in the presence oftwqwitnesses. to support paper-web reels within the im- J O STEVENSON-111g bars 'mbunted in the standards and 00 Witnesse'si I v actingjosupport paper-web reels-exterior to A. W. MCKEANE,

-the in'lpresslon web.

STEPHEN BRowNE;

